if (document.images) {
     button1 = new Image
     button2 = new Image
     button1.src = 'http://knight-international.smartechcorp.net/Portals/0/Skins/SkinKIJFTableMain/images/topWhiteLogo.gif'
     button2.src = 'http://knight-international.smartechcorp.net/Portals/0/Skins/SkinKIJFTableMain/images/topYellowLogo.gif'
 }